Did Bivalves evolve as present day bivalves have differences such as they have siphons which bring in frsh water and removes waster water, in a book i read it said that they evolved to adapt to different enviornments, is this true, and is this evolution?
Evolution is probably the most misunderstood of concepts. Yes, animals do change with environment as the result of selective adaptation.
The word evolution does not automatically mean it is not he work of Allaah(swt) or that a new animal has been formed.
An Elephant is still an elephant if it is the ancient long haired ancester that lived in the Arctic regions or if it is the nearly hairless elephant of today that adapted to the tropics.
The same goes for bivalves. A clam is still a clam if it is the ancient one that lived in clean waters or if it is the clam of today living in polluted waters and only the ones with modified siphons can survive.
There does not seem to be anything in the Qur'an or Ahadith that contradicts evolution unless somebody attempts to apply it to humans or tries to deny it as being the work of Allaah(swt)
Too many people jump to wrong conclusions when the word evolution is mentioned.
Did Bivalves evolve as present day bivalves have differences such as they have siphons which bring in frsh water and removes waster water, in a book i read it said that they evolved to adapt to different enviornments, is this true, and is this evolution?
Salaams
I don't really understand what you are asking here. But I'll try to put it in a nutshell: evolution is basically, imo, (1) how variations in organisms arise (2) survival of different organisms over another and how one replaces other over a number of factors which include characteristics of organisms and environmental changes which might favor one characteristic over other.
It is not Al-Birr (piety, righteousness, and obedience to Allâh, etc.) that you turn your faces towards east and (or) west (in prayers); but Al-Birr is (the quality of) the one who believes in Allâh, the Last Day, the Angels, the Book, the Prophets and gives his wealth, in spite of love for it, to the kinsfolk, to the orphans, and to Al-Masâkîn (the poor), and to the wayfarer, and to those who ask, and to set slaves free, performs As-Salât, and gives the Zakât, and keep their word whenever they make a promise, and who are patient in extreme poverty and ailment (disease) and at the time of persecution, hardship, and war. Such are the people of the truth and they are Al-Muttaqûn (the pious).
He talks great deal about evolution and why opposition to happened to evolution in Christian west. And it is much better source than Harun Yahya's writings for understanding evolution.
It is not Al-Birr (piety, righteousness, and obedience to Allâh, etc.) that you turn your faces towards east and (or) west (in prayers); but Al-Birr is (the quality of) the one who believes in Allâh, the Last Day, the Angels, the Book, the Prophets and gives his wealth, in spite of love for it, to the kinsfolk, to the orphans, and to Al-Masâkîn (the poor), and to the wayfarer, and to those who ask, and to set slaves free, performs As-Salât, and gives the Zakât, and keep their word whenever they make a promise, and who are patient in extreme poverty and ailment (disease) and at the time of persecution, hardship, and war. Such are the people of the truth and they are Al-Muttaqûn (the pious).
During the early Paleozoic, epifaunal and primitive infaunal siphonate suspension feeding was the most common bivalve life mode. Infaunal siphon feeders appeared in the middle and late Paleozoic, but they gained prominence after the Permo-Triassic extinctions. The infaunal and epifaunal forms increased in diversity throughout the Mesozoic until the Cretaceous-Tertiary extinction event, when the epifaunal suspension feeders were decimated. During the Cenozoic, the infaunal siphonate clams continued to diversify. The labial palp deposit feeders and the mucus-tube builders evolved early in the Paleozoic and remained relatively unaffected by the extinctions and diversifications of the remainder of the class.
Clarkson, ENK (1993) Invertebrate Palaeontology and Evolution [4th ed.]. Chapman and Hall, 434 pp.
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